: Shrink your thumbnail to 10% size. If you can’t tell what it is or read the text, it needs more contrast.
: Ensure the main subject is in sharp focus. Use a shallow depth of field (blurred background) to emphasize the person or object in the foreground. 2. Facial Expressions and Human Connection Human faces are the most powerful tool for driving clicks. mature video thumbs
: Use icons or imagery that represent expertise (e.g., professional gear, books, or a clean office environment) to signal that the content is high-quality and informative. Technical Checklist Resolution : 1280 x 720 pixels (16:9 ratio). File Format : .JPG, .PNG, or .GIF (under 2MB). : Shrink your thumbnail to 10% size